don't need to do sth/ needn't do sthA2used in order to say that someone does not have to do something or should not do something: You didn't need to come all this way.You don't need to be frightened.She needn't have taken him to the hospital.Duty, obligation and responsibility

NECESSARY ACTIONB1If something needs something to be done to it, that thing should be done in order to improve it: Do the clothes on this chair need washing?The car needs to be serviced.Duty, obligation and responsibility

A reader of this blog recently asked for a post on idioms that are used in everyday English. This seemed like a reasonable request. After all, if you are going to make the effort to learn a set of English idioms, you want those idioms to be useful. The question, then, was

a robotic device which goes around the legs and part of the body of a person who cannot walk and allows them to move independently and in an upright position The device, known as an exoskeleton, is strapped to the outside of a person’s limbs and can then be controlled by them.